How Many People Are Named Onix?
An estimated 345 people in the United States have the first name Onix. It is predominantly male (98.3%). The average bearer is 18 years old, and Onix peaked in popularity in 2022 with 32 births that year.
Below you will find a full statistical profile of Onix as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Onix paired with any surname.
Estimated Living Americans
345
About 1 in 993,491 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
98.3% confidence
Average Age
18
years old
Peak Year
2022
32 births
Total Registered
354
since 1880
Gender Distribution for Onix
Onix is predominantly male (98.3%), though 6 female births have been registered. It functions as a unisex name for a small percentage of bearers.
Onix as a male name
Ranked #5,375 in 2024
18 male births in 2024
Peak: 2023 (29 births)
Onix as a female name
Ranked #14,852 in 2022
6 female births in 2022
Peak: 2022 (6 births)
Onix: Popularity Over Time
SSA records for Onix span from the 1950s to the 2020s, covering 8 decades of naming data. The most popular decade for this name was the 2020s, when 117 babies were registered. Onix remains highly popular today, with recent registration numbers near its historical peak.
Onix by Decade
How has Onix tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Onix + Last Name Combinations
How many people share a full name with Onix as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Onix
Other first names starting with O with a similar number of bearers.
Onix: Questions and Answers
How many people in the U.S. are named Onix?
We estimate approximately 345 people named Onix are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 993,491 Americans share this first name.
Is Onix a common name?
Onix is classified as "Very Rare" and is more popular than 80.7% of all first names in the SSA database. A total of 354 births have been registered with this name since 1880.
When was Onix most popular?
Onix reached peak popularity in 2022, when 32 babies were given this name. The average age of a living person named Onix is approximately 18 years old, reflecting when the name was most commonly given.
Is Onix a male name?
Onix is predominantly male. 98.3% of people with this name are male. See the gender breakdown above for full details.
How many Onix Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Onix Smith, Onix Johnson, Onix Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
Search for a full name combination
How Many of Me